TY - JOUR AU - Singh, H; Canto, E I; Shariat, S F TI - Predictors of prostate cancer after initial negative systematic 12 core biopsy JO - J Urol VL - 171 PY - 2004 DO - 10.1097/01.ju.0000119667.86071.e7 SP - 1850 EP - 1854 N1 - et al. ER -